To calculate the residual, we'd first need to understand what model or equation you're working with. The term "residual" typically refers to the difference between observed values and the values predicted by a model.
For instance, if you have a model that predicts distance based on time (or vice versa), you would calculate the predicted distance for 2 minutes and then subtract that from the observed distance (12 feet in your case).
If you provide the model or equation, I can help you calculate the residual.